Regenerative reversing-furnace.



L. L. KNOX.

REGENERATIVE REVERSING FURNAGB.

APPLIoA'rIoN FILED 111111.14, 1911. BENBWED MAB. a, 1912.

,041,814. Patented Oct. 22, 1912.

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'REGENERATIVE REVBRSING FURNAGET APPLICATION FILED MAE. 14, 1911. RIENEWED MAR. 8l 1912.

1,041 ,814. Patented Oct. 22, 1912.

5 SHEETS-SHEET 2.

55 I l 1 l 7 6 INVENTOR L. L. KNOX.

REGBNERATIVB RBVERSING FURNAGE.

APPLIGATION FILED 111111.14, 1911. BBNBWED MAB. s, 1912.

1,041,814. Patented 001;. 22, 1912.

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L. L. KNOX.

RBGENBRATIVE RBVBRSING FUBNAGE.

APPLIUATION FILED MAR. 14, 1911-.- Bmmwnn MAR. s, 1912.

1 ,O4 1 ,8 1 4. Patented Oct. 22, 1912.

5 SHEETS-SHEET 4.

' WITNESSES INVENTOR L. L. KNOX.

REGENERATIVE BEVBRSING FURNAGE. APPLICATION FILED MAB. 14, 1911. EBNEWED MAE. 8, 1912. 1,041,814, Patented 0013.221912.

5 SHEETS-@MEET 6.

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' LUTHER L. KNOX, or AVALON, PENNSYLVANIA, AssIeNon'To i'znirsToNn 'riiRNAcn o in the details of construction an CONSTRUCTION COMPANY, or rITTsBUn'eH, PENNSYLVANIA, A .CORPORATION or PENNSYLVANIA.

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Specincationof-Ietters Patent.

. REGENEBATIVE REVERSING-LFURNACE.

' ratenteii'oor. a2, ieia.

s, i912. serial No. 682,518.

' f To a'ZZ 'whom it may concern: Be it known' that I, LUTHER L. KNOX,

' a resident of Avalon, inthe county of Allee gheny and State of Pennsylvania, have in- 5 vented a` new and useful Improvement in Regenerative VReversing-Furnaces, of which the following is a'full, clear, and eXact d e-g scription, reference being had'to the accompanying drawings, forming part of this specification, in .wh1ch Figure .1 is a vvertical section through' .one

` i end portion of an open 'hearth' furnace embodying my invention; Figs. 2 and 3 are sections taken on thelines II-II and III respectively of Fig. 1; Fig. 4 is a section on the line IV-IV of Fig. 11looking in the direction of the arrow on that 4figure; Fig.

isV a sectionthrough the port cooler and arch; Fig. 6 is a plan view-,partly broken away, of the port cooler; Fig. "l is a section on the line VII-VII `of Fig. 1; Fig. 8 is a -perspective view ofa portion of vthe port 'cooler removed; and Fig. 9 is a view partly4 in side' elevation, and partly in verticahsec- Y tion, ofone end portion of ,the furnace.

My invention has relation toregen'erative reversing furnaces; andisdesigned to provide means of novel character for forming yand cooling the gas ports of Such furnaces, 30 and also Vfor cooling the gas and air uptakes, and the side walls and door openings of the furnace.

The nature of my invention will -be best understood by reference tothe accompany- -35.ing drawings in which I have shown the preferred embodiment thereof, a lied to a furnace of the open hearth type, and whichwill now be described, it being premised, however, that various changes ma be made arrangement of the several parts, withont departing 5 3 a portion of the hearth ofthe furnace, and 4 a portion of the roof wall of the-furnace,

vided with a water jacket composed of theV hollow coolers 7, hereinafter more de- .55 scribed. f Y

8 designates the gas lip-take leading up- "wardly from the slag'pocket v9,-and-10'are the air up-takes leading-upwardly from the slag pockets l1, these slag pockets being 14, together with its connection to the up' take 8, is .formedby a port cooler which comprisesa top -cooling plate 1 5, two side cooling plates 16 and 17, and a bottom cooling plate 18. These several plates are' separately formed, 'the bottom and side plates lbeing supported onA Jthe upper ends of the lwalls of the up-take 8 and on the frame of the furnace at 19. The side plates support the top plate 15. The top plate isformed with skew-backs 2O which supportan inner refractory lining 21 forming the roof wall of the `gas port,.th ese skew-backs being extended at the inner endof the top plate to' receive and. support an insert or setting 22 of refractory vbricks or blocks which extend underneath the innerv end of the Vwall 12 and form the inner nose end of the port. The side and bottom plates or coolers each have a refractory lining 23.

The outer end lof the port cooler is closed .byV a separable wall composed 0f a coo Aplate 24 having a refractory lining 25.

vThe gas-uptake is arranged centrally of .the air-uptakes 10 and is also offset away 'from the end of the furnace with respect to the air-uptakes, as best shown in Figs. 2 and 7 -Each of the three uptakes V below the connection to the gas yport is' entirely Surfrom the spirit and scope .of my invention.- 'roundedby a cooling jaclzet 26, formed of In the accompan drawings1 the 'nuinner and outer plates, with suitable water ineral2 designates t-iilelligrame of the furnace, 'circulating connections 27, and inclosing chambers for the circulation of a cooling huid, the chambers around the three uptakes being connected at their junctions so as I5to form a continuouswater space, as shown in F1 7.*- bove theupper'ends of the air-uptakes proper, the connections of these' airfuptakes leading to the air ports are provided on three sides with the coolers 35 and 36, their four or inner sides being protected by the side coolers of the gas port, as shownin Fig.

Fig'. '1;

' openings,

eifective means for water cooling all those 2. These uptake connections are separated from theend of the furnace proper by the laterally open chambersi 37 which extend inwardly to the side coolers of the gas port; and the coolers 36 are of inverted U-shape, (see Fig. 9). One leg of each of these coolers 36 covers the adjacent wall of the .uptake connection, its other le forms al coolerfor the opposed end wall of the furnace; and its horizontal portion forms the roof of the chamber 37 and also a cooler for the floor of the air port at each side of the gas ort. e

Tie upper cooling section -15 of the gas port is shown as having a plurality df'wa; ter inlet pipes 28 extending longitudinally therein from the outer end to a point near the innerend connected at the inner ends of a cross-pipe 2 9 having a 'plurality 'of spraying nozzles or discharges 30, arranged to direct the cooling/liquid against the inner end .wall of the cooler.'V The s ide and bottom coolers are supplied by the circulating pipes 31. ^of any suitable character. Preferably the circulating pipes for all. the cooling members shown are so arranged that the cold water Vwill enter at a low portion there `of and will. escape at the highest point, thereby preventing the 'formation of Isteam pockets or spaces.` The side members 16-17- may also have their inlet pipes provided with sprayingheads, as indicated at. 32 in- It will be seen that the gas port, together with its connection with the gas up-take is formed entirely by a removable structure having separable water cooled walls. This structure in the particular furnace shown, extends outwardly beyond the end walll of the air port 13 so as to connect with the up' per end of the offset gas-uptake. By this construction of the gas port, all the walls thereof areelfectivelyv protected by the coo1.v

.ing members which are capable of being rapidly removed and repaired or replaced without dismantling the entire furnace.

The side wall coolers 7 are formed'in sections arranged side by 'side (see Fig. 9)

held in place by buck-stay`sf39 (Figs.- 4 and 9). The sections which carry-'the door openings, (one of which is shown at O in\-Figs.

- 4 and 9) are formed with arches 41 over said.

with skew-backs 42 which support a refractory arch 43. The side walls of the door openings 44. I-n this manner, the coolers are made to support and cool afportion of the door arches.

It will bel seen that my invention provides parts of the furnace which are most subjected to the destructive action of the heat. While I have shown my invention as applied vto one end only of a furnace, it will of the coolers are pref- P- erably provlded with the refractory linings be understood that the construction is preferably substantially the same at l"both ends for both sets of por s and upt'akes.

. It will beobvious that the exact construction and arrangement of the various coo-ling members, together with their circulating connections may be varied without-departing from the spirit and scope of my invention as defined inthe appended claims.

What I claim is:

1. In a regenerative furnace, a gas port forming and cooling structure, comprising f separate top, side and bottom members, each of said members having a hollow cooling plate and a refractory lining, the'top member being arched and supported by the side members which arevertical, the hollow cooling plates in the top and side members extending fro'm the discharge end of the gas port' as far ba ckat least, as the gas uptake; substantially ats de cribed.

2. In a regenerative furnace, `.forming and cooling ,structure,

separate top, side and bottom memb a gas port ers, each plate and a refractory lining, the top mem- 4ber beingarched and supported by the side members which are vertical, the hollow cooling plates in the top vand side members extending fromthe discharge end of the gas port as1 far back, at least, as the gas uptake, the structure havin 'stantially as described.

3. In 'a regenerative furnace, a gas port forming and cooling structure, comprising separatetop, side and bottom members,- each ^of said members 'having ahollow cooling plate anda refractory lining, the top member being arched and supported by the side members which are vertical, the hollow cooling' plates in the top" and side members being extended'to inclose and form the upper portion of the gas uptake; substantially as described.

4. In a furnade of the class described, havof the upper portion ofthe gas uptake; subrating said ports, and a cooling member extending inwardly through the endl wall of the furnace underneath said refractory wall, said lcooling member having supports for a refractory-lining and also having a refractory nose portion at its inner. end and supiported by it; substantially as described.

ing its air and gasup-takes surrounded by hollow cooling jackets, jackets being connected at their junctions to form a continuous space for a cooling me# dium'; substantially as described.

6. A regenerative furnace having gas and air ports, an uptake therefor, and a refractory wall-separating said ports, and a gas port forming and cooling structure inserted of said membersn having a hollow cooling,

comprising also a separate water-v cooled end wall which forms the outer wall iio ing gas and airports, a refractorywall sepa- 5. A Vfurnace of the class described, h`av' the chambers of said between the air uptakes and extending underneath said Wall, said structure being formed by separate and separable hollow members having supports for a refractory lining, said hollow members extending out- Wardly from the discharge end of the gas port to inclcse and form the upper portion of the gas uptake; substantially as described.

7. In a furnace of the class described, a gas port forming a cooling'structure, comprising a flat bottom member, vertical side members, and an arched top member supported by the side members, each of said members having an outer hollow watercooled plate, said members being separable l5 and having separate water-circulating connections; substantially as described. l

In testimony whereof, I have hereunto set my hand.

LUTHER L. KNOX.

Witnesses:

p GEO. H. PARmLEE, II. M. CoRWIN. 

